1) To determine if the answer to multiplying or dividing integers is positive or negative, use the mnemonic "Mr. Multiplivision". 2) If the factors have the same sign, the answer is positive. If the factors have different signs, the answer is negative. 3) Examples are provided to demonstrate multiplying and dividing integers, such as -30 / 3 = -10 and -13 * -6 = 78.

1. Multiplication and
Division
of Integers

2. Here’s a way I can Remember!
To remember whether your answer
will be positive or negative when
MULTIPLYING or DIVIDING, we’ll
use:
Mr. Multiplivision

3. Sign of the answer
If the signs of the factors are the
same, the answer is positive
If the signs of the the factors are
different, the answer is negative.

4. When multiplying
Integers, cover the
Two signs you are using
Ex.: 5 (-3)
What sign is left
uncovered?
Choral Response
= -15
Five times negative three is equal to negative fifteen.

5. Practice!
(-10)(3) =
-13  -6 =

6. Practice!
(-10)(3) = -30
Negative ten times three is equal to
negative thirty.

7. Practice!
Negative thirteen times negative six is equal
to seventy-eight.
-13  -6 = 78

8. When multiplying
Integers, cover the
Two signs you are using
Ex.: 15 (-3)
What sign is left
uncovered?
Choral Response
= -5
Fifteen divided by negative three is equal to negative
five.

9. Practice!
(-30) 3 =
-12  -6 =

10. Practice!
(-30) 3 = -10
Negative thirty divided by three is
equal to negative ten.

11. Practice!
Negative twelve divided by negative six is
equal to two.
-12  -6 = 2

12. Multiplication and Division
 (4)(-7)  (-2)
 First, (4)(-7)
= - 28
Finish it! (-28)(-2)
Answer: 14
Four times seven divided by
negative two is equal to fourteen.